■ 18’’ voice coil and 2-way full range loudspeaker system ■ 18” voice coil neodymium magnetism subwoofer at high power, cooperating with low distortion 8” MF driver and high sensitivity 1.75” HF compressive driver, can suit for music hall, ballroom, showplace and so on. ■ 60°*40°accurate covering angle for long-throw sound reinforcement place. ■ Firm steel grille protecting the loudspeaker from outside force impact. ■ The enclosure uses high-density plywood and firm finish to protect it from friction and collision. ■ It can go with PX series digital sound processor , accurate to control .